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ruby-changes:38428

From: hsbt <ko1@a...>
Date: Sat, 16 May 2015 21:41:38 +0900 (JST)
Subject: [ruby-changes:38428] hsbt:r50509 (trunk): * string.c: added documentation for character sequence \' with String#sub

hsbt	2015-05-16 21:41:29 +0900 (Sat, 16 May 2015)

  New Revision: 50509

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=50509

  Log:
    * string.c: added documentation for character sequence \' with String#sub
      [Bug #11132][ruby-core:69121][fix GH-900][ci skip] Patch by @shishir127

  Modified files:
    trunk/ChangeLog
    trunk/string.c
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 50508)
+++ ChangeLog	(revision 50509)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Sat May 16 21:41:24 2015  SHIBATA Hiroshi  <hsbt@r...>
+
+	* string.c: added documentation for character sequence \' with String#sub
+	  [Bug #11132][ruby-core:69121][fix GH-900][ci skip] Patch by @shishir127
+
 Sat May 16 21:38:05 2015  SHIBATA Hiroshi  <hsbt@r...>
 
 	* enum.c: fix a sample code. Patch by @eagletmt
Index: string.c
===================================================================
--- string.c	(revision 50508)
+++ string.c	(revision 50509)
@@ -4310,6 +4310,9 @@ rb_str_sub_bang(int argc, VALUE *argv, V https://github.com/ruby/ruby/blob/trunk/string.c#L4310
  *  double-quoted string, both back-references must be preceded by an
  *  additional backslash. However, within +replacement+ the special match
  *  variables, such as <code>&$</code>, will not refer to the current match.
+ *  If +replacement+ is a String that looks like a pattern's capture group but
+ *  is actaully not a pattern capture group e.g. <code>"\\'"</code>, then it
+ *  will have to be preceded by two backslashes like so <code>"\\\\'"</code>.
  *
  *  If the second argument is a Hash, and the matched text is one of its keys,
  *  the corresponding value is the replacement string.

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